Quasi-Orthogonal Space-Time Block Coding with Closed-Loop Control in MIMO Communication Systems

In the paper, we proposed a method of space-time diversity on the transmitting side, combining a closed feedback and quasi-orthogonal space-time coding technique called closed-loop control with quasi-orthogonal space-time block coding (QO-STBC). For a configuration 4x1-4x4 with four transmit and one receive antennas and four symbols per four resource elements, our method allows the QO-STBC to be completely orthogonalized what maximizes the diversity gain. It is shown that the developed approach can also be used for the ×2-× 2$ configuration. In this case, it is not possible to orthogonalize QO-STBC completely, but the level of inter-channel correlation is considerably reduced. A statistical modeling was carried out to study the characteristics of noise immunity of the proposed transmission scheme. We show that it is sufficient to use a one-bit command to control the phase of two transmitting antennas. A gain of 1.4 dB is achieved for the × 1-× 4$ scenario and 2.5 dB - for the × 2-× 2$ case. Phase control of transmitting antennas used in this method of signal transmission does not change the interference conditions. © 2021 FRUCT.

Авторы
Bakulin M.1 , Kreyndelin V. 2 , Petrov D. 2 , Melnik S.3
Сборник материалов конференции
Издательство
IEEE Computer Society
Язык
Английский
Страницы
30-35
Статус
Опубликовано
Номер
9435572
Том
2021-May
Год
2021
Организации
  • 1 Moscow Technical University of Communications and Informatics (MTUSI), Moscow, Russian Federation
  • 2 Peoples' Friendship University of Russia, RUDN University, Moscow, Russian Federation
  • 3 Central Scientific Research Institute of Communication, Moscow, Russian Federation
Ключевые слова
Phase control; Receiving antennas; Space-time block coding (STBC); Turbo codes; Closed-loop control; Interference condition; MIMO communication system; Orthogonal space time block coding; Space-time diversity; Statistical modeling; Transmission schemes; Transmitting antenna; Closed loop control systems
Дата создания
20.07.2021
Дата изменения
20.07.2021
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/74278/
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